Companion Buttons 1.2.0: back to picking any buttons from any pages, without the header row

1.1.0 made each tile one page, so buttons picked on a second page never
showed, choosing ended on every settings change, and a tile could go blank
after a remount. This goes back to 1.0's model and keeps only the changes
asked for:

- Pick buttons from any pages; each gets a ring and its order number.
- No Page / Clear / Done row: Page is in the gear, the grid icon starts and
  ends choosing, a second click on a button takes it out.
- Choosing survives the remount a gear change causes, so switching Page
  carries straight on.
- A tile joining a stream its dashboard already has open (another tile with
  the same buttons, or itself after a settings change) asks GET /state for
  the snapshot instead of waiting blank.
- Gear: Captions and Page. The per-page ＋ entries are gone.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

module.json

@@ -1,9 +1,9 @@
 {
   "id": "companion-buttons",
   "name": "Companion Buttons",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "proddash": ">=1.10.0",
-  "description": "Companion pages and buttons, live as Companion draws them — for status and what's happening",
+  "description": "Any Companion buttons from any pages, live as Companion draws them — for status and what's happening",
   "permissions": [
     {
       "kind": "local-network",
@@ -14,7 +14,7 @@
   "server": "server.js",
   "style": "style.css",
   "minSize": { "w": 1, "h": 1 },
-  "defaultSize": { "w": 6, "h": 4 },
+  "defaultSize": { "w": 4, "h": 4 },
   "configSchema": {
     "companion": {
       "type": "endpoint",
@@ -24,10 +24,10 @@
     }
   },
   "instanceSchema": {
-    "layout": {
+    "captions": {
       "type": "switch",
-      "label": "Page layout",
-      "default": true
+      "label": "Captions",
+      "default": false
     },
     "page": {
       "type": "select",